Describe the growing problems in dealing with E-waste
What will be an ideal response?
E-wastes are the rapidly growing numbers of cell phones, computer components, FAX machines, VCRs and other electronic equipment that are turning up in landfills. These items contain heavy metals and flame retardants that make them candidates for hazardous waste designation in order to keep them out of ordinary landfills. Many discarded electronic devices can be disassembled for recycling. There are many businesses and non-profit groups that collect items for recycling. Because of the toxic materials risk, guidelines for the recycling industry need to be developed. Although recycling rates have improved in the last decade, the rate of e-wastes appearing in landfills and incinerators is still rising.
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The fee-per-____ waste collection systems charge consumers for the amount of waste they throw away.
A. unit B. product C. material D. energy E. bag
Which is not a major factor in the width of a continental shelf?
a. The proximity to a plate boundary b. The speed of ocean currents c. Natural dams that allow sediment accumulation d. The number of rivers depositing new sediments
The oldest dated minerals on Earth are ________ years old
A) 4.03 billion B) 542 million C) 4.4 billion D) 4.56 billion
Which of the following is the SI unit of radiation activity?
A) the becquerel B) the curie C) the millicurie D) the roentgen